Oil-cup.



Patented Oct. I5, |901. 0. C. DURYEA.

DIL CUP.

(Application led Dec. 1, 1900.)

(No Model.)

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OTHO O. DUR'YEA, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO MORRIS O. VHITE, OF SAME PLACE.

@ILE-CUP.

SE'EGIFIGATEGN forming part ci Letters Patent No. 684,767, dated October 15, 1901.

Application filed December 1,1900. Serial No. 38,330. (No modeld To all whom t may concern: ofthe tube is secu rely screwed into the thread- Be it known that I, OTHO C. DURYEA, a citied socket in the bottom of the oil-cup. IVithin zen of the United States, residing at Los Anthis screw-threaded socket in the oil-cup I geles, in the county of Los Angeles, State of place a spiral spring E. On the top of this 5 California, have invented new and useful Imspring I place a conical valve-stopper F, havprovements in Oil-Oups for Feeding Oil to the ing an opening through the center. In the Cylinders of Explosive-Engines, of which the lower part of the tube I provide a conical following is a specification. valve-seat G to engage the valve-stopper F.

The object thereof is to provide a simple Through this valve-seatI provide valve-ports 6o Io and inexpensive oil-cup which will automat- Gr for the passage of oil. The valve-stopper ically feed the oil to the cylinder while the F is held in normal engagement with the engine is in operation. I accomplish this obvalve-seat G by the pressure thereon of the ject by means of the mechanism illustrated spiral spring, closing the ports therein. Now in the accompanying drawing, being a cenwhen the pressure of the gas (having en- 15 tral vertical section ot'my improved oil-cup, tered through the tube from the piston-chama part of the cylinder of the engine to which ber to the oil-cup) creates a greater pressure it is secured being shown. on the oil in the cup than the combined rc- The oil-cup A is attached to the cylinder sistance afforded by the spring and the pres- B in the usual manner by being screwed sure of the outer air on the under part of the 7o zo thereinto, care being taken that the threaded valve-stopper, which will happen when the shank of the oil-cup does not project down piston has moved from under the oil-cup opennto the piston-chamber and contact with the ing in the cylinder, leaving the under face of piston' in its movement along the cylinder. the valve-stopper F exposed to the outer air, The opening in the cylinder for the oil-cup it will cause the valve-stopperF to compress 25 is immediately over the piston when the pisthe spring and cause it to recede from its seat ton is at the outer limit of its stroke. Run- G, leaving the ports in the seat open for the ning down through the center of the oil-cup passage of oil therethrough down into the pisand through the center of the shank thereof ton-chamber. Oil may be fed to the cup by I provide a cylindrical tube B, the bottom removing from the top thereof the screw-cap 48o 3o opening directly into the piston-chamber and H. In the top of the tube I provide notches the top projecting up into the oil-cup and terto engage the end of a screw-driver, by the r0- minating in a hemispherical valveseat C. tation of which the tube can be raised or low- In this tube I provide two valves, one in the ered in its seat in the socket of the oil-cup, top and one in the bottom. In the top of the and thereby compress or loosen the spiral 35 tube I place a spherical valve-stopper O, spring and increase or decrease the pressure which rests on the valve-seat O and permits of the valve-stopper F Von the valve-seat Gr, the gas to pass up through the tube from the and thereby regulate the feed of the oil to the piston-chamber into the top of the oil-cup, cylinder. which occurs when the piston reaches its Having described my invention, what I 9o 4o outer stroke, (because of the pressure of the claim as new, and desire to secure by Letters gas in the tube while the piston is in this po- Patent, is-

sition caused by the escape of gas by the pisl. An oil-cup, comprisinga casing, adapted ton, a portion of which passes into the tube,) to be screwed into the piston-cylinderof an eX- Where it becomes entrapped when the valveplosive-engine, and having a screw-threaded 45 stopper drops into the valve-seat, which it socket in the bottom thereof for the reception does immediately the piston moves from unef the shank of the central gas-conducting der the oil-cup opening in the cylinder. EX- tube; a central gas-tube in said casing, havtending across the opening above the valveing a conical valve-seat at the bottom therestopper I place a removable bar D to limit of, with ports therethrough for the passage of Ioe' 5o the movement of and prevent the accidental oil; and a hemispherical valve-seat in the top displacement of the stopper. The lower end of said tube forming a seat for a spherical valve-stopper; a spherical valve-stopper in said seat; a coiled spring in said socket; a conical valve-stopper on said coiled spring having an opening in the center thereof, adapted to engage the conical valve-seat in the tube; and means to compress or loosen said spring.

2. The combination with the cylinderof an explosion-engine, of an oil-cup comprising a main casing A, adapted to be screwed into a threaded opening in the cylinder; a tube B projecting from the bottom of said casing; a valve-seat in the top of said tube; a spherical valve-stopper C in the top of said tube and adapted to engage the valve-seat therein; the conical Valve-stopper F in the bottom thereof, adapted to engage a valve-seat G on t-he bottom of the tube; a Valve-seat G in said bottom; valve-ports in said valve-seat; aspiral spring E in said recess adapted to support and press the valve-stoppcrF up and against the valve-seat; and means to compress or loosen said spring to regulate the feed of oil to the cylinder.

3. An oil-cup to automatically feed oil to the cylinder of an explosive-engine, comprising an oil-cup secured to said cylinder; a tube in said oil-cup; valvular means in said tube to permit the products of explosion to pass through said tube into the cup above the oil and prevent its escape therefrom and thereby create a pressure thereon; a valve in the lower end of said tube to regulate the passage of oil therethrough; a stopper for said valve; a spring in the tube adapted to normally close the said stopper in said valve and prevent the passage of oil therethrough except when the pressure on the oil exceeds the combined pressure of said spring and of the outer air on the under side of the said Valve-stopper.

In witness that I claim the foregoing l have hereunto subscribed my name this 21st day of November, 1900.

OTH() C. DURYEA. lVitnesses:

G. E. HARPHAM, HARRY A. BRooKs. 

